计算(√8-2√0.25)-(√9/8+2/3√72)
问题描述:
计算(√8-2√0.25)-(√9/8+2/3√72)
答
(√8-2√0.25)-(√9/8+2/3√72)
=(2√2-√4*0.25)-(√9*2/8*2+2/3*6√2)
=(2√2-1)-(3√2/4+4√2)
=2√2-1-3√2/4-4√2
=2√2-4√2-3√2/4 -1
=-2√2-3√2/4 -1
=-11√2/4 -1
答
=2√2-√1-(3/4)√2-(2/3)*6√2
=2√2-1-(3/4)√2-4√2
=-1-(11/4)√2